260 I'OLKMONIUM FAMILY. 



P. viscida, cult, from California as EtrrocA vfsciDA : clammy all ovei 

 with dark glandular hairs, rather coarse ; leaves ovate, cut-toothed, short- 

 petioled; raceme single terminating the branches ; corolla deep blue, 1' or less 

 wide.; pod many-deeded. (\j 



4. WHITLAVIA. (Named by the lamented Professor Harvey for his 

 friend Mr. \\'/u'tla.) Fl. summer. 



W. grandiflbra. Cult, for ornament, from California : resembles Pha- 

 celia viscidain growth and foliage, but only slightly clammy, the roundish-ovate 

 or slightly heart-shaped leaves coarsely toothed, on longer petioles; racemes 

 loose ; corolla 1' or more long, violet-blue (also a white variety) ; stamens and 

 tyle very slender and protruding. 



5. HYDROLEA. (Named from Greek word for water; the plants aquatic 

 or in wet places.) Fl. summer. 2/ 



H. quadrivalvis, of S. E. States, has hairy stems ; lanceolate acute leaves 

 taperinir to the base, and lanceolate sepals nearly as long as the corolla. 



H. affinis, of river-banks, from S. Illinois S., is smooth, with short-petioled 

 lanceolate leaves, and ovate sepals as long as the corolla. 



H. ovata, of S. W. States, has soft-downy stems, ovate leaves, looser flow- 

 ers, and lanceolate villous sepals. 



82. POLEMONIACEJE, POLEMONIUM FAMILY. 



Chiefly herbs, with regular flowers, persistent 5-cleft calyx, the 5 

 lobes of the monopetalous corolla convolute in the bud, 3-lobed 

 style, 3-celled ovary and pod ; the single, few, or many seeds in each 

 cell borne on the thick axis. Embryo straight in the axis of 

 albumen. Insipid and innocent plants, the juice watery. Nearly 

 all are N. American plants, many cult, for ornament. 



1. Erect or diffuse herbs, not climbing, and with nothing resembling stipules. 



1. PHLOX. Calyx narrow, prismatic or plaited, 5-toothed or 5-cleft. Corolla 



salver-shaped, with a long tube (Lessons, p. 102, fig. 208), in which the 5 

 short and unequally inserted stamens are included. Ovary often with 2 

 ovules, but the short pod with only one seed in each cell. Leaves entire and 

 mostly sessile, the lower all opposite, upper often alternate. 



2. G1LIA/ Calyx tubular or bell-shaped, 5-cleft. Corolla of various shapes. 



Stamens equally inserted and projecting from the throat of the corolla, not 

 declined. Ovules and seeds several in each cell. Leaves either entire, cut, 

 or divided. 



3. POLEMONIUM. Calyx bell-shaped. Corolla open-bell-shaped or short-tunnel 



form. Stamens slender, like those of Gilia, but declined, hairy-appendag&d 

 at the base. Leaves pinnate, alternate. 



2. Tall-climbing by com/):>und tendrils on the pinnate leaves : Invest leaflet* close 

 to the stem, unlike the others, imitating ttijndes. 



4. COB^EA. Calyx of 5 large leaf-like divisions, the margins of which, applied 



each to each, appear like 5 winged angles. Corolla Bell-shaped, with short 

 and broad spreading lobes. Stamen- declined. A lleshy disk around the 

 base of the ovary. Seeds numeron- in each cell of the pod, winged. Pe- 

 duncles axillary, 1-flowered, lenfy-bracted near the base, naked above. 

 Leaves alternate. 



1. PHLOX. (Greek for flame, anciently applied to Lychnis, and transferred 

 to these North American plants.) 



1. (\) Cultivated for ornament from Texas : fl. all summer. 

 P. Drummbndii. From this come all the annual Phloxes of the gardens : 

 rather low, branching and spreading, somewhat clammy-pubescent, with cu 

 rymb* of purple, crimson, rose-colored, or even white, showy flowers. 



